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IRU3021IM, IRU3021M, IRU3021W

Table of contents:
Info of IRU3021IM
Info of IRU3021M
Info of IRU3021W

IRU3021IM, IRU3021M, IRU3021W Selling Leads, Datasheet

MFG:N/A Package Cooled:SOP28 D/C:01+

IRU3021IM, IRU3021M, IRU3021W Datasheet download

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Part Number: IRU3021IM

MFG: N/A

Package Cooled: SOP28

D/C: 01+

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IRU3021M General Description

The IRU3021M controller IC is specifically designed to meet Intel specification for next generation microprocessor applications requiring multiple on-board regulators. The IRU3021M provides a single chip controller IC for the Vcore, three LDO controllers, one with an automatic select pin that connects to the Type Detect pin of the AGP slot for the AGP V_DDQ supply, one for GTL+ and the other for the 1.8V chip set regulator as required for the next generation PC applications. The IRU3021M uses N-channel MOSFET as pass transistor for Vout2(V_DDQ), Vout3(1.5V) and Vout4(1.8V). No external resistor divider is necessary for any of the regulators. The switching regulator feature a patented topology that in combination with a few external components as shown in the typical application circuit, will provide well in excess of 20A of output current for an on-board DC/DC converter while automatically providing the right output voltage via the 5-bit internal DAC .The IRU3021M also features, lossless current sensing for both switcher by using the R_DS(on)of the high-side power MOSFET as the sensing resistor, an output under-voltage shutdown that detects short circuit condition for the linear outputs and latches the system off, and a Power Good window comparator that switches its open collector output low when any one of the outputs is outside of a pre-programmed window.

IRU3021M Maximum Ratings

V5 Supply Voltage ...................................................... 7V
V12 Supply Voltage .................................................. 20V
Storage Temperature Range ................. -65°C To 150°C
Operating Junction Temperature Range ....0°C To 125°C

IRU3021M Features

· Provides single chip solution for Vcore, GTL+,AGP bus, and 1.8V
· Automatic voltage selection for AGP slot V_DDQsupply
· Linear Regulator Controller On-Board for 1.8V
· Designed to meet Intel latest VRM specification for next generation microprocessors
· On-Board DAC programs the output voltage from 1.3V to 3.5V
· Linear Regulator Controller On-Board for 1.5V
GTL+ Supply
· Loss-less Short Circuit Protection for all Outputs
· Synchronous operation allows maximum efficiency Patented architecture allows fixed frequency operation as well as 100% duty cycle during dynamic load
· Minimum Part Count
· Soft-Start
· High current totem pole driver for direct driving of the external Power MOSFET
· Power Good function monitors all outputs
· Over-Voltage Protection Circuitry Protects the switcher output and generates a Fault output

IRU3021M Typical Application

· Total Power Solution for next generation Intel processor application

IRU3021M Connection Diagram

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